diff --git a/Dockerfile b/Dockerfile
index cda4ba1..65552e8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,10 @@
-FROM php:7.4.23-fpm-buster
+FROM php:7.4.23-fpm-bullseye
 
 RUN apt-get update && \
     apt-get -y --no-install-recommends install \
     libbz2-dev \
     libfreetype6-dev \
+    libgmp-dev \
     libicu-dev \
     libjpeg-dev \
     libmagickwand-dev \
@@ -19,9 +20,11 @@ RUN printf "\n" | pecl install imagick
 RUN docker-php-ext-enable imagick
 
 RUN docker-php-ext-install -j$(nproc) \
+    bcmath \
     bz2 \
     exif \
     gd \
+    gmp \
     intl \
     json \
     mysqli \